Load pages from cbz

app/src/main/java/org/koitharu/kotatsu/core/parser/LocalMangaRepository.kt

@@ -10,6 +10,7 @@ import org.koitharu.kotatsu.core.model.*
 import org.koitharu.kotatsu.domain.MangaLoaderContext
 import org.koitharu.kotatsu.domain.local.MangaIndex
 import org.koitharu.kotatsu.domain.local.MangaZip
+import org.koitharu.kotatsu.utils.AlphanumComparator
 import org.koitharu.kotatsu.utils.ext.longHashCode
 import org.koitharu.kotatsu.utils.ext.readText
 import org.koitharu.kotatsu.utils.ext.safe
@@ -43,7 +44,7 @@ class LocalMangaRepository(loaderContext: MangaLoaderContext) : BaseMangaReposit
 				.filter { x -> !x.isDirectory && x.name.substringBefore('.').matches(pattern) }
 		} else {
 			zip.entries().asSequence().filter { x -> !x.isDirectory }
-		}
+		}.toList().sortedWith(compareBy(AlphanumComparator()) { x -> x.name})
 		return entries.map { x ->
 			val uri = zipUri(file, x.name)
 			MangaPage(
@@ -51,7 +52,7 @@ class LocalMangaRepository(loaderContext: MangaLoaderContext) : BaseMangaReposit
 				url = uri,
 				source = MangaSource.LOCAL
 			)
-		}.toList()
+		}
 	}
 
 	private fun getDetails(file: File): Manga {

app/src/main/java/org/koitharu/kotatsu/ui/reader/PageHolder.kt

@@ -11,7 +11,8 @@ import org.koitharu.kotatsu.core.model.MangaPage
 import org.koitharu.kotatsu.ui.common.list.BaseViewHolder
 import org.koitharu.kotatsu.utils.ext.getDisplayMessage
 
-class PageHolder(parent: ViewGroup, private val loader: PageLoader) : BaseViewHolder<MangaPage, Unit>(parent, R.layout.item_page),
+class PageHolder(parent: ViewGroup, private val loader: PageLoader) :
+	BaseViewHolder<MangaPage, Unit>(parent, R.layout.item_page),
 	SubsamplingScaleImageView.OnImageEventListener {
 
 	init {
@@ -26,16 +27,20 @@ class PageHolder(parent: ViewGroup, private val loader: PageLoader) : BaseViewHo
 		progressBar.isVisible = true
 		ssiv.recycle()
 		loader.load(data.url) {
-			ssiv.setImage(ImageSource.uri(it.toUri()))
+			val uri = it.getOrNull()?.toUri()
+			if (uri != null) {
+				ssiv.setImage(ImageSource.uri(uri))
+			}
+			val error = it.exceptionOrNull()
+			if (error != null) {
+				onError(error)
+			}
 		}
 	}
 
 	override fun onReady() = Unit
 
-	override fun onImageLoadError(e: Exception) {
-		textView_error.text = e.getDisplayMessage(context.resources)
-		layout_error.isVisible = true
-	}
+	override fun onImageLoadError(e: Exception) = onError(e)
 
 	override fun onImageLoaded() {
 		progressBar.isVisible = false
@@ -46,4 +51,10 @@ class PageHolder(parent: ViewGroup, private val loader: PageLoader) : BaseViewHo
 	override fun onPreviewReleased() = Unit
 
 	override fun onPreviewLoadError(e: Exception?) = Unit
+
+	private fun onError(e: Throwable) {
+		textView_error.text = e.getDisplayMessage(context.resources)
+		layout_error.isVisible = true
+		progressBar.isVisible = false
+	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/reader/PageLoader.kt

@@ -1,6 +1,6 @@
 package org.koitharu.kotatsu.ui.reader
 
-import android.content.Context
+import android.net.Uri
 import kotlinx.coroutines.*
 import okhttp3.OkHttpClient
 import okhttp3.Request
@@ -9,9 +9,10 @@ import org.koin.core.inject
 import org.koitharu.kotatsu.core.local.PagesCache
 import org.koitharu.kotatsu.utils.ext.await
 import java.io.File
+import java.util.zip.ZipFile
 import kotlin.coroutines.CoroutineContext
 
-class PageLoader(context: Context) : KoinComponent, CoroutineScope, DisposableHandle {
+class PageLoader : KoinComponent, CoroutineScope, DisposableHandle {
 
 	private val job = SupervisorJob()
 	private val tasks = HashMap<String, Job>()
@@ -21,9 +22,11 @@ class PageLoader(context: Context) : KoinComponent, CoroutineScope, DisposableHa
 	override val coroutineContext: CoroutineContext
 		get() = Dispatchers.Main + job
 
-	fun load(url: String, callback: (File) -> Unit) = launch {
-		val result = withContext(Dispatchers.IO) {
-			loadFile(url, false)
+	fun load(url: String, force: Boolean = false, callback: (Result<File>) -> Unit) = launch {
+		val result = runCatching {
+			withContext(Dispatchers.IO) {
+				loadFile(url, force)
+			}
 		}
 		callback(result)
 	}
@@ -31,17 +34,27 @@ class PageLoader(context: Context) : KoinComponent, CoroutineScope, DisposableHa
 	private suspend fun loadFile(url: String, force: Boolean): File {
 		if (!force) {
 			cache[url]?.let {
-
 				return it
 			}
 		}
-		val request = Request.Builder()
-			.url(url)
-			.get()
-			.build()
-		return okHttp.newCall(request).await().use { response ->
-			cache.put(url) { out ->
-				response.body!!.byteStream().copyTo(out)
+		val uri = Uri.parse(url)
+		return if (uri.scheme == "cbz") {
+			val zip = ZipFile(uri.schemeSpecificPart)
+			val entry = zip.getEntry(uri.fragment)
+			zip.getInputStream(entry).use {
+				cache.put(url) { out ->
+					it.copyTo(out)
+				}
+			}
+		} else {
+			val request = Request.Builder()
+				.url(url)
+				.get()
+				.build()
+			okHttp.newCall(request).await().use { response ->
+				cache.put(url) { out ->
+					response.body!!.byteStream().copyTo(out)
+				}
 			}
 		}
 	}

app/src/main/java/org/koitharu/kotatsu/ui/reader/ReaderActivity.kt

@@ -56,7 +56,7 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, GridTouchHelper.OnG
 			insets
 		}
 
-		loader = PageLoader(this)
+		loader = PageLoader()
 		adapter = PagesAdapter(loader)
 		pager.adapter = adapter
 		presenter.loadChapter(state)

app/src/main/java/org/koitharu/kotatsu/utils/AlphanumComparator.kt

@@ -0,0 +1,63 @@
+package org.koitharu.kotatsu.utils
+
+class AlphanumComparator : Comparator<String> {
+
+	override fun compare(s1: String?, s2: String?): Int {
+		if (s1 == null || s2 == null) {
+			return 0
+		}
+		var thisMarker = 0
+		var thatMarker = 0
+		val s1Length = s1.length
+		val s2Length = s2.length
+		while (thisMarker < s1Length && thatMarker < s2Length) {
+			val thisChunk = getChunk(s1, s1Length, thisMarker)
+			thisMarker += thisChunk.length
+			val thatChunk = getChunk(s2, s2Length, thatMarker)
+			thatMarker += thatChunk.length
+			// If both chunks contain numeric characters, sort them numerically
+			var result = 0
+			if (thisChunk[0].isDigit() && thatChunk[0].isDigit()) { // Simple chunk comparison by length.
+				val thisChunkLength = thisChunk.length
+				result = thisChunkLength - thatChunk.length
+				// If equal, the first different number counts
+				if (result == 0) {
+					for (i in 0 until thisChunkLength) {
+						result = thisChunk[i] - thatChunk[i]
+						if (result != 0) {
+							return result
+						}
+					}
+				}
+			} else {
+				result = thisChunk.compareTo(thatChunk)
+			}
+			if (result != 0) return result
+		}
+		return s1Length - s2Length
+	}
+
+	private fun getChunk(s: String, slength: Int, marker: Int): String {
+		var marker = marker
+		val chunk = StringBuilder()
+		var c = s[marker]
+		chunk.append(c)
+		marker++
+		if (c.isDigit()) {
+			while (marker < slength) {
+				c = s[marker]
+				if (!c.isDigit()) break
+				chunk.append(c)
+				marker++
+			}
+		} else {
+			while (marker < slength) {
+				c = s[marker]
+				if (c.isDigit()) break
+				chunk.append(c)
+				marker++
+			}
+		}
+		return chunk.toString()
+	}
+}